/*
* This file is part of the Chelsio FCoE driver for Linux .
*
* Copyright ( c ) 2008 - 2013 Chelsio Communications , Inc . All rights reserved .
*
* This software is available to you under a choice of one of two
* licenses . You may choose to be licensed under the terms of the GNU
* General Public License ( GPL ) Version 2 , available from the file
* OpenIB . org BSD license below :
*
* Redistribution and use in source and binary forms , with or
* without modification , are permitted provided that the following
* conditions are met :
*
* - Redistributions of source code must retain the above
* copyright notice , this list of conditions and the following
* disclaimer .
*
* - Redistributions in binary form must reproduce the above
* copyright notice , this list of conditions and the following
* disclaimer in the documentation and / or other materials
* provided with the distribution .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND ,
* EXPRESS OR IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT . IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM , DAMAGES OR OTHER LIABILITY , WHETHER IN AN
* ACTION OF CONTRACT , TORT OR OTHERWISE , ARISING FROM , OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE .
*/
#include "csio_hw.h"
#include "csio_init.h"
static int
csio_t5_set_mem_win(struct csio_hw *hw, uint32_t win)
{
u32 mem_win_base;
/*
* Truncation intentional : we only read the bottom 32 - bits of the
* 64 - bit BAR0 / BAR1 . . . We use the hardware backdoor mechanism to
* read BAR0 instead of using pci_resource_start ( ) because we could be
* operating from within a Virtual Machine which is trapping our
* accesses to our Configuration Space and we need to set up the PCI - E
* Memory Window decoders with the actual addresses which will be
* coming across the PCI - E link .
*/
/* For T5, only relative offset inside the PCIe BAR is passed */
mem_win_base = MEMWIN_BASE;
/*
* Set up memory window for accessing adapter memory ranges . ( Read
* back MA register to ensure that changes propagate before we attempt
* to use the new values . )
*/
csio_wr_reg32(hw, mem_win_base | BIR_V(0 ) |
WINDOW_V(ilog2(MEMWIN_APERTURE) - 10 ),
PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, win));
csio_rd_reg32(hw,
PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, win));
return 0 ;
}
/*
* Interrupt handler for the PCIE module .
*/
static void
csio_t5_pcie_intr_handler(struct csio_hw *hw)
{
static struct intr_info pcie_intr_info[] = {
{ MSTGRPPERR_F, "Master Response Read Queue parity error" ,
-1 , 1 },
{ MSTTIMEOUTPERR_F, "Master Timeout FIFO parity error" , -1 , 1 },
{ MSIXSTIPERR_F, "MSI-X STI SRAM parity error" , -1 , 1 },
{ MSIXADDRLPERR_F, "MSI-X AddrL parity error" , -1 , 1 },
{ MSIXADDRHPERR_F, "MSI-X AddrH parity error" , -1 , 1 },
{ MSIXDATAPERR_F, "MSI-X data parity error" , -1 , 1 },
{ MSIXDIPERR_F, "MSI-X DI parity error" , -1 , 1 },
{ PIOCPLGRPPERR_F, "PCI PIO completion Group FIFO parity error" ,
-1 , 1 },
{ PIOREQGRPPERR_F, "PCI PIO request Group FIFO parity error" ,
-1 , 1 },
{ TARTAGPERR_F, "PCI PCI target tag FIFO parity error" , -1 , 1 },
{ MSTTAGQPERR_F, "PCI master tag queue parity error" , -1 , 1 },
{ CREQPERR_F, "PCI CMD channel request parity error" , -1 , 1 },
{ CRSPPERR_F, "PCI CMD channel response parity error" , -1 , 1 },
{ DREQWRPERR_F, "PCI DMA channel write request parity error" ,
-1 , 1 },
{ DREQPERR_F, "PCI DMA channel request parity error" , -1 , 1 },
{ DRSPPERR_F, "PCI DMA channel response parity error" , -1 , 1 },
{ HREQWRPERR_F, "PCI HMA channel count parity error" , -1 , 1 },
{ HREQPERR_F, "PCI HMA channel request parity error" , -1 , 1 },
{ HRSPPERR_F, "PCI HMA channel response parity error" , -1 , 1 },
{ CFGSNPPERR_F, "PCI config snoop FIFO parity error" , -1 , 1 },
{ FIDPERR_F, "PCI FID parity error" , -1 , 1 },
{ VFIDPERR_F, "PCI INTx clear parity error" , -1 , 1 },
{ MAGRPPERR_F, "PCI MA group FIFO parity error" , -1 , 1 },
{ PIOTAGPERR_F, "PCI PIO tag parity error" , -1 , 1 },
{ IPRXHDRGRPPERR_F, "PCI IP Rx header group parity error" ,
-1 , 1 },
{ IPRXDATAGRPPERR_F, "PCI IP Rx data group parity error" ,
-1 , 1 },
{ RPLPERR_F, "PCI IP replay buffer parity error" , -1 , 1 },
{ IPSOTPERR_F, "PCI IP SOT buffer parity error" , -1 , 1 },
{ TRGT1GRPPERR_F, "PCI TRGT1 group FIFOs parity error" , -1 , 1 },
{ READRSPERR_F, "Outbound read error" , -1 , 0 },
{ 0 , NULL, 0 , 0 }
};
int fat;
fat = csio_handle_intr_status(hw, PCIE_INT_CAUSE_A, pcie_intr_info);
if (fat)
csio_hw_fatal_err(hw);
}
/*
* csio_t5_flash_cfg_addr - return the address of the flash configuration file
* @ hw : the HW module
*
* Return the address within the flash where the Firmware Configuration
* File is stored .
*/
static unsigned int
csio_t5_flash_cfg_addr(struct csio_hw *hw)
{
return FLASH_CFG_START;
}
/*
* csio_t5_mc_read - read from MC through backdoor accesses
* @ hw : the hw module
* @ idx : index to the register
* @ addr : address of first byte requested
* @ data : 64 bytes of data containing the requested address
* @ ecc : where to store the corresponding 64 - bit ECC word
*
* Read 64 bytes of data from MC starting at a 64 - byte - aligned address
* that covers the requested address @ addr . If @ parity is not % NULL it
* is assigned the 64 - bit ECC word for the read data .
*/
static int
csio_t5_mc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
uint64_t *ecc)
{
int i;
uint32_t mc_bist_cmd_reg, mc_bist_cmd_addr_reg, mc_bist_cmd_len_reg;
uint32_t mc_bist_data_pattern_reg;
mc_bist_cmd_reg = MC_REG(MC_P_BIST_CMD_A, idx);
mc_bist_cmd_addr_reg = MC_REG(MC_P_BIST_CMD_ADDR_A, idx);
mc_bist_cmd_len_reg = MC_REG(MC_P_BIST_CMD_LEN_A, idx);
mc_bist_data_pattern_reg = MC_REG(MC_P_BIST_DATA_PATTERN_A, idx);
if (csio_rd_reg32(hw, mc_bist_cmd_reg) & START_BIST_F)
return -EBUSY;
csio_wr_reg32(hw, addr & ~0 x3fU, mc_bist_cmd_addr_reg);
csio_wr_reg32(hw, 64 , mc_bist_cmd_len_reg);
csio_wr_reg32(hw, 0 xc, mc_bist_data_pattern_reg);
csio_wr_reg32(hw, BIST_OPCODE_V(1 ) | START_BIST_F | BIST_CMD_GAP_V(1 ),
mc_bist_cmd_reg);
i = csio_hw_wait_op_done_val(hw, mc_bist_cmd_reg, START_BIST_F,
0 , 10 , 1 , NULL);
if (i)
return i;
#define MC_DATA(i) MC_BIST_STATUS_REG(MC_BIST_STATUS_RDATA_A, i)
for (i = 15 ; i >= 0 ; i--)
*data++ = htonl(csio_rd_reg32(hw, MC_DATA(i)));
if (ecc)
*ecc = csio_rd_reg64(hw, MC_DATA(16 ));
#undef MC_DATA
return 0 ;
}
/*
* csio_t5_edc_read - read from EDC through backdoor accesses
* @ hw : the hw module
* @ idx : which EDC to access
* @ addr : address of first byte requested
* @ data : 64 bytes of data containing the requested address
* @ ecc : where to store the corresponding 64 - bit ECC word
*
* Read 64 bytes of data from EDC starting at a 64 - byte - aligned address
* that covers the requested address @ addr . If @ parity is not % NULL it
* is assigned the 64 - bit ECC word for the read data .
*/
static int
csio_t5_edc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
uint64_t *ecc)
{
int i;
uint32_t edc_bist_cmd_reg, edc_bist_cmd_addr_reg, edc_bist_cmd_len_reg;
uint32_t edc_bist_cmd_data_pattern;
/*
* These macro are missing in t4_regs . h file .
*/
#define EDC_STRIDE_T5 (EDC_T51_BASE_ADDR - EDC_T50_BASE_ADDR)
#define EDC_REG_T5(reg, idx) (reg + EDC_STRIDE_T5 * idx)
edc_bist_cmd_reg = EDC_REG_T5(EDC_H_BIST_CMD_A, idx);
edc_bist_cmd_addr_reg = EDC_REG_T5(EDC_H_BIST_CMD_ADDR_A, idx);
edc_bist_cmd_len_reg = EDC_REG_T5(EDC_H_BIST_CMD_LEN_A, idx);
edc_bist_cmd_data_pattern = EDC_REG_T5(EDC_H_BIST_DATA_PATTERN_A, idx);
#undef EDC_REG_T5
#undef EDC_STRIDE_T5
if (csio_rd_reg32(hw, edc_bist_cmd_reg) & START_BIST_F)
return -EBUSY;
csio_wr_reg32(hw, addr & ~0 x3fU, edc_bist_cmd_addr_reg);
csio_wr_reg32(hw, 64 , edc_bist_cmd_len_reg);
csio_wr_reg32(hw, 0 xc, edc_bist_cmd_data_pattern);
csio_wr_reg32(hw, BIST_OPCODE_V(1 ) | START_BIST_F | BIST_CMD_GAP_V(1 ),
edc_bist_cmd_reg);
i = csio_hw_wait_op_done_val(hw, edc_bist_cmd_reg, START_BIST_F,
0 , 10 , 1 , NULL);
if (i)
return i;
#define EDC_DATA(i) (EDC_BIST_STATUS_REG(EDC_BIST_STATUS_RDATA_A, i) + idx)
for (i = 15 ; i >= 0 ; i--)
*data++ = htonl(csio_rd_reg32(hw, EDC_DATA(i)));
if (ecc)
*ecc = csio_rd_reg64(hw, EDC_DATA(16 ));
#undef EDC_DATA
return 0 ;
}
/*
* csio_t5_memory_rw - read / write EDC 0 , EDC 1 or MC via PCIE memory window
* @ hw : the csio_hw
* @ win : PCI - E memory Window to use
* @ mtype : memory type : MEM_EDC0 , MEM_EDC1 , MEM_MC0 ( or MEM_MC ) or MEM_MC1
* @ addr : address within indicated memory type
* @ len : amount of memory to transfer
* @ buf : host memory buffer
* @ dir : direction of transfer 1 = > read , 0 = > write
*
* Reads / writes an [ almost ] arbitrary memory region in the firmware : the
* firmware memory address , length and host buffer must be aligned on
* 32 - bit boundaries . The memory is transferred as a raw byte sequence
* from / to the firmware ' s memory . If this memory contains data
* structures which contain multi - byte integers , it ' s the callers
* responsibility to perform appropriate byte order conversions .
*/
static int
csio_t5_memory_rw(struct csio_hw *hw, u32 win, int mtype, u32 addr,
u32 len, uint32_t *buf, int dir)
{
u32 pos, start, offset, memoffset;
u32 edc_size, mc_size, win_pf, mem_reg, mem_aperture, mem_base;
/*
* Argument sanity checks . . .
*/
if ((addr & 0 x3) || (len & 0 x3))
return -EINVAL;
/* Offset into the region of memory which is being accessed
* MEM_EDC0 = 0
* MEM_EDC1 = 1
* MEM_MC = 2 - - T4
* MEM_MC0 = 2 - - For T5
* MEM_MC1 = 3 - - For T5
*/
edc_size = EDRAM0_SIZE_G(csio_rd_reg32(hw, MA_EDRAM0_BAR_A));
if (mtype != MEM_MC1)
memoffset = (mtype * (edc_size * 1024 * 1024 ));
else {
mc_size = EXT_MEM_SIZE_G(csio_rd_reg32(hw,
MA_EXT_MEMORY_BAR_A));
memoffset = (MEM_MC0 * edc_size + mc_size) * 1024 * 1024 ;
}
/* Determine the PCIE_MEM_ACCESS_OFFSET */
addr = addr + memoffset;
/*
* Each PCI - E Memory Window is programmed with a window size - - or
* " aperture " - - which controls the granularity of its mapping onto
* adapter memory . We need to grab that aperture in order to know
* how to use the specified window . The window is also programmed
* with the base address of the Memory Window in BAR0 ' s address
* space . For T4 this is an absolute PCI - E Bus Address . For T5
* the address is relative to BAR0 .
*/
mem_reg = csio_rd_reg32(hw,
PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, win));
mem_aperture = 1 << (WINDOW_V(mem_reg) + 10 );
mem_base = PCIEOFST_G(mem_reg) << 10 ;
start = addr & ~(mem_aperture-1 );
offset = addr - start;
win_pf = PFNUM_V(hw->pfn);
csio_dbg(hw, "csio_t5_memory_rw: mem_reg: 0x%x, mem_aperture: 0x%x\n" ,
mem_reg, mem_aperture);
csio_dbg(hw, "csio_t5_memory_rw: mem_base: 0x%x, mem_offset: 0x%x\n" ,
mem_base, memoffset);
csio_dbg(hw, "csio_t5_memory_rw: start:0x%x, offset:0x%x, win_pf:%d\n" ,
start, offset, win_pf);
csio_dbg(hw, "csio_t5_memory_rw: mtype: %d, addr: 0x%x, len: %d\n" ,
mtype, addr, len);
for (pos = start; len > 0 ; pos += mem_aperture, offset = 0 ) {
/*
* Move PCI - E Memory Window to our current transfer
* position . Read it back to ensure that changes propagate
* before we attempt to use the new value .
*/
csio_wr_reg32(hw, pos | win_pf,
PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, win));
csio_rd_reg32(hw,
PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, win));
while (offset < mem_aperture && len > 0 ) {
if (dir)
*buf++ = csio_rd_reg32(hw, mem_base + offset);
else
csio_wr_reg32(hw, *buf++, mem_base + offset);
offset += sizeof (__be32);
len -= sizeof (__be32);
}
}
return 0 ;
}
/*
* csio_t5_dfs_create_ext_mem - setup debugfs for MC0 or MC1 to read the values
* @ hw : the csio_hw
*
* This function creates files in the debugfs with external memory region
* MC0 & MC1 .
*/
static void
csio_t5_dfs_create_ext_mem(struct csio_hw *hw)
{
u32 size;
int i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE_A);
if (i & EXT_MEM_ENABLE_F) {
size = csio_rd_reg32(hw, MA_EXT_MEMORY_BAR_A);
csio_add_debugfs_mem(hw, "mc0" , MEM_MC0,
EXT_MEM_SIZE_G(size));
}
if (i & EXT_MEM1_ENABLE_F) {
size = csio_rd_reg32(hw, MA_EXT_MEMORY1_BAR_A);
csio_add_debugfs_mem(hw, "mc1" , MEM_MC1,
EXT_MEM_SIZE_G(size));
}
}
/* T5 adapter specific function */
struct csio_hw_chip_ops t5_ops = {
.chip_set_mem_win = csio_t5_set_mem_win,
.chip_pcie_intr_handler = csio_t5_pcie_intr_handler,
.chip_flash_cfg_addr = csio_t5_flash_cfg_addr,
.chip_mc_read = csio_t5_mc_read,
.chip_edc_read = csio_t5_edc_read,
.chip_memory_rw = csio_t5_memory_rw,
.chip_dfs_create_ext_mem = csio_t5_dfs_create_ext_mem,
};
Messung V0.5 in Prozent C=96 H=88 G=91
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